日期:2014-05-16 浏览次数:20415 次
1.html代码
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></meta> <title>Android/Javascript互调Demo</title> <script type="text/javascript" language="javascript"> function callJavaScriptMethod() { document.getElementById("content").innerHTML = "Android 调用 Javascript 成功"; } </script> </head> <body> <div ><a onClick="window.demo.callJavaMethod()" href="">点击-->JS调用Android代码</a></div> <div style="margin:50px 50px 50px 50px;" id="content"></div> </body> </html>
2.xml布局
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <WebView android:id="@+id/webview" android:layout_width="match_parent" android:layout_height="wrap_content" /> <Button android:id="@+id/androidCallJSBtn" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="点击 Android 调用 JavaScript"/> </LinearLayout>
package com.testwebview; import android.annotation.SuppressLint; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.webkit.WebSettings; import android.webkit.WebView; import android.widget.Button; import android.widget.Toast; public class MainActivity extends Activity { private WebView mWebView; private Button androidCallJSBtn; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initView(); } @SuppressLint({ "JavascriptInterface", "SetJavaScriptEnabled" }) private void initView() { mWebView = (WebView) findViewById(R.id.webview); WebSettings mWebSettings = mWebView.getSettings(); mWebSettings.setJavaScriptEnabled(true); //加上这句话才能使用javascript方法 mWebView.addJavascriptInterface(new Object() {//增加接口方法,让html页面调用 public void callJavaMethod() { Toast.makeText(getApplicationContext(), "JS调用Android成功", Toast.LENGTH_LONG).show(); } }, "demo"); mWebView.loadUrl("file:///android_asset/demo.html"); //加载页面 androidCallJSBtn = (Button) findViewById(R.id.androidCallJSBtn); androidCallJSBtn.setOnClickListener(new Button.OnClickListener() { //给button添加事件响应,执行JavaScript的fillContent()方法 public void onClick(View v) { mWebView.loadUrl("javascript:callJavaScriptMethod()"); } }); } }
demo地址:htt